I have an RTX 5090 and am an avid gamer. When I travel I use my M1 MacBook Air and play indie games like Slay the Spire, Hades 2, Balatro, and Hollow Knight Silksong. Not cutting edge but definitely cutting edge fun. Those games run with no difficulties.

Slay the Spire 2 is in early access and has some major issues running but I suspect that’s some issues in the game engine because it’s not framerate but some sort of hitching that makes button presses not register.

YapYap which is an intentionally retro ugly 3D style runs barely in a playable state on the M1, but it got me through in a pinch when my kid wanted us to both play.

If I want to play AAA I fall back to my desktop, you can stream using Moonlight or Parsec but unless both sides are wired it isn’t great.